2007-11-20 Neal H. Walfield <neal@gnu.org>

	Merge changes from mainline Hurd.  Update L4 bits to compile with
	those changes.

	* sysdeps/l4/pt-block.c (__pthread_block): Call l4_receive, not
	L4_Receive.
	* sysdeps/l4/pt-create-np.c (pthread_create_from_l4_tid_np): Don't
	pass TID to __pthread_create_internal.  Emit a warning.
	* sysdeps/l4/pt-stack-alloc.c (allocate_page): Remove function.
	(__pthread_stack_alloc): Don't require that STACKSIZE is equal to
	__pthread_stacksize.  Call mmap.
	* sysdeps/l4/pt-thread-halt.c (__pthread_thread_halt): Take
	additional argument, need_dealloc.  Call __pthread_dealloc.  Stop
	the thread.
	* sysdeps/l4/hurd/pt-sysdep.c (init_routine): When calling
	__pthread_create_internal, don't pass the tid.
	* tests/test-1.c (main): Use pthread_mutex_init, not
	PTHREAD_MUTEX_INITIALIZER.

	* pthread/pt-alloc.c: Don't include <bits/atomic.h>.  Include
	<atomic.h>.
	(__pthread_free_threads): Make it an atomicptr_t, not an
	__atomicptr_t.
	(__pthread_alloc): Don't use __atomicptr_compare_and_swap, use
	atomic_compare_and_exchange_val_acq.
	* pthread/pt-create.c: Don't include <bits/atomic.h>.  Include
	<atomic.h>.
	(__pthread_total): Make it an atomic_fast32_t, not an __atomic_t.
	(__pthread_create_internal): Use atomic_increment and
	atomic_decrement, not __atomic_inc and __atomic_dec.
	* pthread/pt-dealloc.c: Don't include <bits/atomic.h>.  Include
	<atomic.h>.
	(__pthread_free_threads): Make it an atomicptr_t, not an
	__atomicptr_t.
	(__pthread_dealloc): Use atomic_compare_and_exchange_val_acq, not
	__atomicptr_compare_and_swap.
	* pthread/pt-exit.c: Don't include <bits/atomic.h>.  Include
	<atomic.h>.
	(pthread_exit): Use atomic_decrement_and_test, not
	__atomic_dec_and_test.
	* pthread/pt-internal.h: Don't include <bits/atomic.h>.  Include
	<atomic.h>.
	(__pthread_total): Make it an atomic_fast32_t, not an __atomic_t.
	* sysdeps/powerpc/bits/atomic.h: Remove file.
	* sysdeps/ia32/bits/atomic.h: Likewise.

1 files changed, 62 insertions, 0 deletions

diff --git a/sysdeps/generic/sem-post.c b/sysdeps/generic/sem-post.c
new file mode 100644
index 00000000..0e20ea7a
--- /dev/null
+++ b/sysdeps/generic/sem-post.c
@@ -0,0 +1,62 @@
+/* Post a semaphore.  Generic version.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+__sem_post (sem_t *sem)
+{
+  struct __pthread *wakeup;
+
+  __pthread_spin_lock (&sem->__lock);
+  if (sem->__value > 0)
+    /* Do a quick up.  */
+    {
+      assert (! sem->__queue);
+      sem->__value ++;
+      __pthread_spin_unlock (&sem->__lock);
+      return 0;
+    }
+
+  if (! sem->__queue)
+    /* No one waiting.  */
+    {
+      sem->__value = 1;
+      __pthread_spin_unlock (&sem->__lock);
+      return 0;
+    }
+
+  /* Wake someone up.  */
+
+  /* First dequeue someone.  */
+  wakeup = sem->__queue;
+  __pthread_dequeue (wakeup);
+
+  /* Then drop the lock and transfer control.  */
+  __pthread_spin_unlock (&sem->__lock);
+
+  __pthread_wakeup (wakeup);
+
+  return 0;
+}
+
+strong_alias (__sem_post, sem_post);